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  1. Pro299

    2021 Yukon Denali - Sudden, Unexpected Slowdown from 67 to 50mph

    I expect that was your collision avoidance system having a hiccup. Mine did that often enough that I finally turned it off. I was afraid the sudden slowdowns would eventually cause an accident.
  2. Pro299

    2021 USB ?

    My 21 is sensitive to the USB stick format. FAT16 works. FAT32 is not recognized at all.
  3. Pro299

    3.0 Duramax Camshaft Drive Sprocket Replacement

    Interesting. Would like to see the failed sprocket. Anyone know if there is a path for broken bits to get to the oil pan?
  4. Pro299

    My first mechanical failure on the 3.0

    No TSB, just a random seal failure. Maybe an out of spec part, or maybe damage during assembly, don't know. Warranty covered it and no one else has reported similar, so I guess I just drew the short straw.
  5. Pro299

    My first mechanical failure on the 3.0

    Well, not a major 'failure', but still. Took the XL in for an oil change and the tech found oil on the front of the pan area. It was hard to tell from underneath because of the splash guard, but sure enough there was a mist of oil on the passenger side. Turns out the front crank seal is...
  6. Pro299

    6.2L or Duramax reliability

    I've yet to put in more than one 2.5 gallon jug of DEF between oil changes at 5K. I do not tow with the Yukon, however, so my experience is to just pick up a jug after an oil change and when it's down to 1/2 on the gage I pour it in.
  7. Pro299

    2023 Yukon XL or Standard?

    On road trips, I think the standard length is fine for four with luggage. Six with luggage can be a tight fit even for the XL and at seven you really need an external carrier. Even driving around daily by myself, I've never once thought I'd rather have the standard Yukon, but I have plenty...
  8. Pro299

    SOLVED: 2021 Yukon rear seat entertainment issues

    Talk to your dealer. They should have been included. Someone may have scavenged them from your truck before you picked it up.
  9. Pro299

    Suburban 2023 - Power running boards retrofit

    They are not typically a dealer installed accessory. You may want to read through this: https://www.tahoeyukonforum.com/threads/2021-tahoe-escalade-yukon-power-running-boards.126705/ The installation I expect is straightforward. The integration with the body control module, maybe not so...
  10. Pro299

    If you had a do-over, Would you buy your duramax all over again?

    Two years, 22k miles, no issues. Fuel mileage has only improved with time. Dmax is a no-brainer.
  11. Pro299

    Dealer oil change $$$

    I've been paying about $100 for oil changes on the Dmax. That's only a few bucks more than it would cost to do it myself.
  12. Pro299

    Another one on the Wireless Charger

    I have a Samsung S21+ and it charges just fine in my 2021 even through the case.
  13. Pro299

    Swapped 22s for 20s and wow! Need help with PSI please

    Factory recommendation is 35.
  14. Pro299

    Headlights look dim on a new Yukon Denali

    Mine seems plenty bright when driving. Viewed from outside, not so much. I think there's just not much light "spillage" which I see as a good thing.
  15. Pro299

    Rear quarter panel body damage question..

    That's a panel replacement, but not totaled. Got sideswiped last month in the same spot. Panel and bumper cover job next week. $7K.
  16. Pro299

    New to me 2021 Yukon XL Denali

    Looks great, but I'm probably biased. Welcome to the forum.
  17. Pro299

    2023 Denali Ultimate Guide Climate Sync

    That's an interesting change and yes it would be an aggravation. Wife is always messing with the HVAC setting and when she gets out I use the buttons to put everything back to automatic. On the other hand the 2021 doesn't have a camera button.
  18. Pro299

    2023 Denali Ultimate Guide Climate Sync

    It's not on the driver temp control? I'm not in the vehicle now but pretty sure that's where mine is.
  19. Pro299

    Rear Media Help

    You will need an app. Not familiar with Google phones, but x-cast works on my Samsung. It took some patience to get the two to work together on mine. Once the app and the vvehicle "see" each other it works fine.
  20. Pro299

    Engine coolant level in surge tank ?

    Looks just like mine. I notice the full line under the hoses is at the seam, but can't tell if that's for cold or hot. I guess labelling it with a C or an H would have made it too easy for us.
  21. Pro299

    I think the dealership destroyed my engine

    In your case, I wouldn't point fingers or guess at what happened. Just let them replace the engine and get the warranty pushed out for your trouble. Not likely that they forgot to fill it. You'd have had a low oil warning and a low oil pressure warning at a minimum. Same for the filter...
  22. Pro299

    2021 Tahoe transmission issues

    Agreed. Does it also occur when in Drive or Reverse? In neutral there is nothing but the torque converter/input shaft turning, clutch bands are not engaged, so there's nothing moving inside the transmission to make a sporadic noise like that. I've heard similar knocks from loose torque...
  23. Pro299

    Oil consumption

    Interesting. I'm scheduled for an oil change this week after 5K mile interval. Level is barely off the full mark.
  24. Pro299

    Power Sliding Console Security

    Safe only works in the standard console. It's one of several reasons I limited ordering packages on my XL. I knew I wanted the safe and couldn't figure out any good use for a moving console that was less secure.
  25. Pro299

    Actual diesel consumption on 21 duramax Tahoe

    Last fillup was at 18712 miles. Total gallons 742. So 25.2 MPG overall. Usually 23.5 or so around local, mostly one or two onboard. Interstate depends on terrain. Lots of hills at 75 MPH plus, only about 26 MPG. Flatlands 28-29. I had one tank at 30.1 in south Georgia and north Florida...

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